CVE-2020-36727 : Vulnerability Insights and Analysis

The Newsletter Manager plugin for WordPress is vulnerable to insecure deserialization, potentially allowing unauthenticated attackers to inject a serialized PHP object.

Understanding CVE-2020-36727

The vulnerability in the Newsletter Manager plugin for WordPress could lead to unauthorized code execution.

What is CVE-2020-36727?

The vulnerability arises from unsanitized input in the 'customFieldsDetails' parameter, allowing attackers to inject malicious code.

The Impact of CVE-2020-36727

The vulnerability could be exploited by unauthenticated attackers to execute arbitrary PHP code on the affected system, leading to potential compromise.

Technical Details of CVE-2020-36727

The vulnerability is due to insecure deserialization in the Newsletter Manager plugin for WordPress.

Vulnerability Description

Unsanitized input from the 'customFieldsDetails' parameter is passed through a deserialization function, enabling attackers to inject a serialized PHP object.

Affected Systems and Versions

Vendor: f1logic
Product: Newsletter Manager
Versions affected: up to and including 1.5.1

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting malicious serialized PHP objects through the 'customFieldsDetails' parameter.

Mitigation and Prevention

Immediate action is crucial to mitigate the risks posed by CVE-2020-36727.

Immediate Steps to Take

Update the Newsletter Manager plugin to version 1.5.2 or later to patch the vulnerability.
Consider disabling the plugin until it is updated to prevent exploitation.

Long-Term Security Practices

Regularly update all plugins and themes to the latest versions to address security vulnerabilities.
Implement strong input validation mechanisms to prevent similar vulnerabilities in the future.
Monitor security advisories and promptly apply patches to secure your WordPress environment.

Patching and Updates

Ensure timely installation of security patches and updates to protect against known vulnerabilities.